Miguel Angel Osorio Chong announced on Tuesday that he had instructed Mexico’s CISEN intelligence agency and federal police to conduct an "exhaustive" investigation into the spying operation and to determine whether any Mexican operatives were involved.
The call for the high-level probe followed an official order by President Pena Nieto to conduct a major investigation on whether the US National Security Agency (NSA) hacked his emails while he was campaigning for presidential office in 2012.
The NSA targeted his phone and the phones of nine of his close associates to build a map of their regular contacts. From then it closely monitored those individuals’ phones as well, intercepting 85,489 text messages, including those sent by Nieto, press reports say.
President Nieto further added that Calderon, widely known for his cooperation with American officials, was also targeted by US eavesdropping efforts while in office.